Combination door lock



June 2, 1953 M. MARGO COMBINATION DOOR LOCK Filed NOV. 25, 1950 2Sheets-Sheet l 43 4 "uvmvroze.

/Varrqy Marya Attorney Patented June 2, 1953 QEEIQE:

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ZWEIaimm-w (01, wL ggyg 20. The lug has a suitably shaped roundedprojecting outer end portion adapted to cooperate with a suitablestriker plate or keeper so that the structure just described serves as aspring detent or releasable retaining means that holds the door in aclosed position but releases when sufficient force is applied to thedoor, tending to open it. The 'bolt D of the lock is an elongate part ofsubstantial size slidably carried in a guideway 2! provided in the faceH of the case B. The bolt has an outer or forward end portion 22 adaptedto be moved between a retracted position such as is shown in Fig. 6 andan extended position such as is shown in Figs. 1 and 3. The inner endportion 23 of the bolt is located in chamber Y of the case where it isengaged by the means F, the means G and the means H.

The lock mechanism E is a tumbler type combination lock mechanism and inits preferred form it includes, generally, a lock bar 24 mounted toreciprocate in the case, a plurality of tumblers 25, mounting means 26for the tumblers, adjustable stop means 21 for the tumblers, means 28normally yieldingly acting on the tumblers to operate them in onedirection and operating means 29 for the tumblers.

The various parts of the lock mechanism E are preferably housed orconfined within the chamber X of the case except that certain of theparts project from the case for cooperation with other parts of thelock, as will be hereinafter described.

The lock bar is an elongate member slidably supported by the case and inthe preferred form of the invention it is slidably supported in guideopenings 30 in the back I2 and partition [8 of ried by the back l2 andpartition l8 and is spaced below the lower edge portion of the lock bar24 as shown throughout the drawings. In carrying out my invention. I mayemploy any desired number of tumblers 25 and when several tumblers areemployed, as illustrated in the drawings, they are carried by the shaft32 so that they are spaced along the shaft, as illustrated in Figs. 3and 6 of the drawings. Since it is preferred that the tumblers beidentical or alike in form, construction and operation, I will describebut one tumbler, it being understood that the description is applicableto all of the tumblers. It is to be understood, however, that inpractice the tumblers are set differently through the means 21hereinafter described.

Each tumbler '25 is preferably a rotatable element cooperating with thelock bar 24. The tumbler is rotatably supported by shaft 32 to rotate ina plane normal to the longitudinal axis of the lock bar and the tumbleris preferably a disc-like part having a central opening or bore 33rotatably passing the shaft 26. The disclike tumbler is of such diameteras to overlap or intersect the lower edge portion of the lock bar 24.The lock bar has a notch or recess 34 in its lower edge portionaccommodating the peripheral portion of the tumbler. With the peripheryof the tumbler engaged in the notch of the lock bar the bar is lockedagainst longitudinal movement. A recess or notch 35 is provided in theperiphery of the tumbler and the tumbler is such that it can be rotatedto a position where the notch 35 registers with the lock bar, in whichcase the bar is free to move longitudinally.

There is an adjustable stop means 2! for each tumbler which meansincludes, generally, a stop lug 36 projecting axially from one sideofthe tumbler, a block 3'! rotatably supported on shaft 36 at said side ofthe tumbler, a stop lug 38 projecting from the block to cooperate withthe stop lug 36, and means for setting the block 31 in various rotativepositions, which means includes, generally, notches or recesses 39 inthe periphery of the block 31 and a stop pin 40 carried by the case toengage one of the recesses, the pin being mounted so that it can bedisengaged to allow a block to be set in various positions. The block 31i preferably a disc-shaped part having a central opening or bore 41passing the shaft 32. The stop 38 projects from the block 31 toward thetumbler 25 and engages the side wall 42 of the tumbler so that it servesto space the block 31 from the tumbler.

The means provided for setting the block in various rotative positionsserves to fix the block against rotation and thereby sets or fixes thestop lug 38 in a fixed position so that it stops the tumbler in apredetermined rotative position. It will be apparent that by locatingthe stop lugs on the tumbler and block so that they engage, as shown inthe drawings, the rotative v position of the block 31 will determine theposition in which the tumbler is stopped. In the preferred form of theinvention the recesses 39 provided in the periphery of the block are ina continuous series around the periphery of the block so that the blockhas a notched or toothed periphery similar to a gear. The set pin 40 isslidably carried in a guide opening 43 in the bottom M of the case and areleasable retainer 44 applied to the bottom of the case normally holdsthe pin in position where its inner end extends into the case to enterone of the recesses 39 in the block 31. In the case illustrated theretainer 44 is held by a screw 45 as clearly illustrated in Fig. 6 ofthe drawings. The means 28 acting to normally yieldingly turn thetumbler 25 engages the tumbler so that the tumbler is normally turned toa position where the stop lug 36 on the tumbler engages or stops againstthe stop lug 38 on the block 31. In the preferred form of the inventionthe means 28 involves a helical spring having a coil portion 46surrounding the shaft 32 between the tumbler and the block and havingone projecting leg 41 fixed to the tumbler and another projecting leg 48fixed to the case.

The operating means 29 for the tumbler is operable to rotate or advancethe tumbler about the shaft 26 so the tumbler is turned to move the stoplug 36 away from the stop lug 38 until the tumbler reaches a positionwhere its notch 35 registered with the lock bar 24. The means 29includes, generally, a manually operable finger piece 59 at the exteriorof the case at one side thereof, preferably the outer side 15, a shank51 carrying the finger piece and slidably supported in the case, aratchet wheel 52 concentrio with the tumbler and joined or fixedthereto, and a ratchet arm or pawl 53 carried by the shank 5| tocooperate with the ratchet wheel. The shank 5| is slidably guided by thecase and tumblers'is overactuated in'the course of operation'of thecombination or, in other words, is operated so that the notch of thetumbler moves beyond a position to register with the lock bar. The meansJ includes, generally, a shiftable support for the control pawls 6Bwhich support is preferably in the form of a shaft 84 supported bythecase to extend through compartment X of the case parallel with shaft 32and having an end portion projecting into compartment Y of the case. Theseveral lock pawls 6|] are fixed on the shaft 84 to normally projecttherefrom into position to engage the ratchet members 52, as clearlyshown in Fig. 4 of the drawings. The shaft 84 is rotatably supported bythe case and a finger 86 projects from the shaft 84 within thecompartment Y. A cam 81 is carried by the lever 12 of the'means G. Thecam 81 is preferably a part of the plate 15 attached to the lever 12 andit is so formed and related to the finger BG'as'to cause deflection ofthe finger and consequent rotation of the shaft 84, each time the lever12 is moved from the position shown in Fig. 3 to that shown in Fig. 7.This rotation of shaft 84 is such as to lift the lock pawls 60 away fromthe ratchet wheels thusreleasing them so that the springs 48 rotate thepawls to the stopped positions.

Through the construction just described it will be apparent that thecombination lock mecha nism E can be easily and quickly restored orpositioned in the fully locked or initial position by simple operationof the handle at the inner side of the door.

To effect restoring of the lock mechanism E from the outer side of thedoor I provide a restoring handle 90 at the outer side of the caseprojecting from the case as do the handles or finger pieces 50 of thelock mechanism. The handle 90 is on a shank 9| slidably guided by thecase and a spring 92 acts between the outer wall of the case and a stopshoulder 93 on the shank so that the shank is normally in an in orretracted position. A suitable connection is provided between the shank9| and the shaft 84 so that when the shank 9| is moved to the outerextended position the shaft 84 is rotated to re lease the lock pawls 60.The connection illustrated in the drawings is shown in Fig. 8 andinvolves a flexible strip 94 of spring material such as spring steelhaving one end anchored to the shaft 9| at 85 and having its other endanchored to the shaft 84 at 96. The strip 94 forms a tie between theshank 9| and the shaft so that the shaft is pulled around or is rotatedwhen the shank 9| is operated.

From the foregoing description it is believed thatthe setting andoperation of the mechanism will be fully understood. It will be apparentthat the pins 40 controlling the rotative position of the several blocks3'1 may be set so that the blocks are in any desired rotative position,thus locating the stop lugs 38 wherever desired. By setting the stoplugs 38 in different positions different numbers or operations of theoperating means 29 will be required to bring the tumblers into positionwith their notches aligned with the lock bar. Assuming the lockmechanism E to be in the fully restored position a person knowing thesetting of the blocks 37 may release the lock mechanism E by operatingthe means 29 controlling the tumblers the proper number of times. Whenthe tumblers have been operated so that their notches are aligned withthe lock bar 24 the bar is free to move and the bolt D can be withdrawnby simple operation of the handle 82 8 at the outside of the door. Ashereinabove described the door can always be opened freely or easilyfrom the inner side by merely turning or manipulating the handle 10,which operation releases the coupling means F prior to moving th bolt D.

, Having described only a typical preferred form and application of myinvention, I do not Wish to be limited or restricted to the specificdetails herein set forth, but wish to reserve to myself any variationsor modifications that may appear to those skilled in the art and fallwithin the scope of the following claims.

Having described my invention, I claim:

A lock of the character described including, a case for application to adoor and having inner and outer sides, a bolt carried by the caseoperable to lock the door, a lock mechanism carried by the caseincluding a lock bar, a plurality of tumblers normally holding the barand operable to release the bar and individually operable tumbleractuators accessible at one side of the case, a releasable couplingbetween the bolt and bar, and two manual operating means eachcooperatively related to the bolt and engageable at opposite sides ofthe case, one operable to release the coupling and operate the bolt andthe other operable to operate the bolt when the bar is released.

2. A look of the character described including, a case for applicationto a door and having inner and outer sides, a bolt carried by the caseoperable to lock the door, a lock mechanism carried by the caseincluding a notched lock bar, a plurality of notched tumblers normallyengaged in the notches of the bar holding the bar and operable to aposition where their notches reg-v ister with the bar to release the barand individually operable tumbler actuators accessible at one side ofthe case, a releasable coupling between the bolt and bar, and two manualoperating means each coupled to the bolt and engageable at oppositesides of the case, one operable to release the coupling and operate thebolt and the other operable to operate the bolt when the bar isreleased.

3. A look of the character described including, a case for applicationto a door and having inner and outer sides, a bolt carried by the caseoperable to lock the door, a lock mechanism carried by the caseincluding a lock bar, a plurality of tumblers normally holding the barand operable to release the bar and individually operable tumbleractuators accessible at one side of the case, a releasable couplingbetween the bolt and bar including a latch pivotally carried by the barand normally engaged in a notch in the bolt, and two manual operatingmeans engageable at opposite sides of the case, one operable to releasethe coupling and coupled with the bolt to operate it and the othercoupled with the bolt to operate the bolt when the bar is released.

' 4. A lock of the character described including, a case for applicationto a door and having inner and outer sides, a bolt carried by the caseoperable to lock the door, a lock mechanism carried by the caseincluding a lock bar, a plurality of tumblers cooperatively related tothe lock bar, and tumbler actuators at the exterior of the case to beindividually selectively and manually operated at one side of the door,a releasable coupling between the bolt and bar, and operating meansincluding a handle at one side of the case and cam means operated by thehandle to first release the coupling and then operate the bolt.

1' and operate the bolt and the other operable to operate the bolt whenthe bar is released.

12. A lock of the character described including, a case for applicationto a door and having inner and outer sides, a bolt carried by the caseoperable to lock the door, a lock mechanism carried by the caseincluding a lock bar, a releasable coupling pivotally secured to one endof the lock ing the block in a selected rotative position,

s means normally yieldingly urging each tumbler to a stopped position,and ratchet means for each tumbler operable to rotate the tumbleragainst the last mentioned means and including an operating handle atthe exterior of the case, and two 7 manual operating means each coupledto the bolt I and engageable at opposite sides of the case, one

operable to release the coupling and operate the -bolt and the otheroperable to operate the bolt when the bar is released.

13. A look of the character described including,

. a case for application to a door and having inner and outer sides, abolt carried by the case operable to lock the door, a lock mechanismcarried by the case including a lock bar, a releasable couplingpivotally secured to one end of the lock bar and adapted to engage thebolt, a plurality of independently rotatable tumblers normally holdingthe bar and operable to release the bar, stop means for each tumbler,each stop means including a rotatable notched block and a releasablelock pin engaging a notch in the block holding the block in a selectedrotative position,

'. means normally yieldingly urging each tumbler to a stopped position,and ratchet means for each tumbler operable to rotate the tumbleragainst the last mentioned means and including a lock pawl and anoperating handle at the exterior of the case, two manual operating meanscoupled with the bolt and engageable at opposite sides of the case, oneoperable to release the coupling and operate the bolt and the otheroperable to operate 1 the bolt when the bar is released, and meansoperable to release the lock pawls including a handle accessible at theexterior of the case.

14. A lock of the character described including,

a case for application to a door and having inner and outer sides, abolt carried by the case operable to lock the door, a lock mechanismcarried by the case including a lock bar coupled to the bolt by areleasable coupling, a plurality of inde- 3 pendently rotatable tumblersnormally holding the bar and operable to release the bar, stop means foreach tumbler, each stop means including' a rotatable notched block and areleasable lock pin engaging a notch in the block holding the block in aselected rotative position, means normally yieldingly urging eachtumbler to a stopped position, and ratchet means for each tumbleroperable to rotate the tumbler against the last mentioned means andincluding a lock pawl and an operating handle at the exterior of thecase, two manual operating means, each coupled to the bolt andengageable at opposite sides of the case, one operable to release thecoupling and operate the bolt and the other operable to operate the boltwhen the bar is released, means 1 operable to release the lock pawlsincluding a I- handle accessible at the exterior of the case, and

means operated by the first mentioned operating means acting to releasethe lock pawls when said first mentioned means is operated.

15. A lock of the character described including, a case for applicationto a door and having inner and outer sides, a bolt carried by the caseoperable to lock the door, a lock mechanism carried by the caseincluding a lock bar coupled to the bolt by a releasable coupling, aplurality of independently rotatable tumblers normally holding the barand operable to release the bar, stop means for each tumbler, each stopmeans including arotatable notched block and a releasable lock pinengaging a notch in the block holding the block in a selected rotativeposition, means normally yieldingly urging each tumbler to a stoppedposition, and ratchet means for each tumbler operable to rotate thetumbler against the last mentioned means and including a lock pawl andan operating handle at the exterior of the case; two manual operatingmeans cooperatively coupled to the bolt and engageable at opposite sidesof the case, one operable to release the coupling and operate the boltand the other operable to operate the bolt when the bar is released, andmeans operable to release the lock pawls including a rotatably mountedshaft carrying the lock pawls and a handle accessible at the exterior ofthe case operable to rotate the shaft.

16. A lock of the character described including, a case for applicationto a door and having inner and outer sides, a bolt carried by the caseoperable to lock the door, a lock mechanism carried by the caseincluding a lock bar coupled to the bolt by a releasable coupling, aplurality of independently rotatable tumblers normally holding the barand operable to release the bar, stop means for each tumbler, each stopmeans including a rotatable notched block and areleasable lock pinengaging a notch in the block holding the block in a selected rotativeposition, means normally yieldingly urging each tumbler toa stoppedposition, and ratchet means for each tumbler operable to rotate thetumbler against the last mentioned means and including a lock pawl andan operating handle at the exterior of the case, two manual operatingmeans each cou-- pled to the bolt and engageable at opposite sides ofthe case, one operable to release the coupling and operate the bolt andthe other operable to operate the bolt when the bar is released, meansoperable to release the lock pawls including a rotatably mounted shaftcarrying the lock pawls and a handle accessible at the exterior of thecase operable to rotate the shaft, and means operated by the firstmentioned operating means rotating the shaft to release the lock pawlswhen the said first mentioned means is operated.

' 1'7. A lock of the character described including, a case forapplication to a door and having inner and outer sides, a bolt carriedby the case operable to lock the door, a lock mechanism carried by thecase including a lock bar, a releasable coupling pivotally secured toone end of the lock bar and adapted to engage the bolt, a plurality ofindependently movable tumblers normally holding the bar and operable torelease the bar, stop means for each tumbler, means normally yieldinglurging the tumblers to a stopped position, and operating means for thetumblers-including ratchet mechanisms for moving the tumblers andindependently operable handles for operating the ratchet mechanisms,each ratchet mechanism including a lock pawl, two manual operating meanseach cooperatively related to the bolt and engageable at opposite sidesof the case, one operable to release the coupling and operate the boltand the other operable to operate the bolt when the bar is released, andcam means operated by one of the operating means acting to release thelock pawls of the ratchet mechanisms.

18. A lock of the character described including, a case for applicationto a door and having inner and outer sides, a bolt carried by the caseoperable to lock the door, a lock mechanism carried. by the caseincluding a lock bar, a plurality of tumblers normally holding the barand operable to release the bar, and individually operable tumbleractuators accessible at one side of the case, a releasable couplingbetween the bolt and bar, and two manual operating means coupled to thebolt and engageable at opposite sides of the case, one including cammeans operable to release the coupling and means operating the bolt whenthe coupling i released, and the other operable to operate the bolt whenthe bar is released.

19. A lock of the character described including, a case for applicationto a door and having inner and outer sides, a bolt carried by the caseoperable to lock the door, a lock mechanism carried by the caseincluding, a notched lock bar, a plurality of rotatable notched tumblersnormally engaged in the notches of the bar holding the bar and operableto a position where their notches register with the bar to release thebar, a single shaft supporting the tumblers, and individually operabletumbler actuators accessible at one side of the case, a releasablecoupling between the bolt and bar, and two manual operating meanscooperatively coupled to the bolt and engageable at opposite sides ofthe case, one operable to release the coupling and operate the bolt andthe other operable to operate the bolt when the bar is released.

20. A look of the character described including, a case for applicationto a door and having inner and outer sides, a bolt carried by the caseoperable to lock the door, a lock mechanism carried by the caseincluding a lock bar, a plurality of tumblers normally holding the barand operable to release the bar, and individually operable tumbleractuators accessible at one side of the case and each including atumbler operating ratchet mechanism, a releasable coupling between thebolt and bar, and two manual operating means coupled to the bolt andengageable at opposite sides of the case, one operable to release thecoupling and operate the bolt and the other operable to operate the boltwhen the bar is released.

MURRAY IVIARGO.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 330,137 Malley Nov. 10, 1885 599,565 Kintner Feb. 22, 18981,771,080 Fitzsimmons July 22, 1930 2,533,023 Lickteig Dec. 5, 1950

